Nicolai, Jürgen. A complete introduction to finches / [electronic resource] / Jürgen Nicolai.. — Neptune City, NJ : : T.F.H. Publications,, c1987.. — 93 p. : : col. ill. ; 22 cm. "CO-006." Includes index. Bibliography: p. 91. ISBN: 0866222936 (pbk.) 9780866222938 (pbk.) LCCN: 87145356 Subjects--Topical Terms: Finches.Cage birds. LC Class. No.: SF473.F5 / N53 1987 Dewey Class. No.: 636.6/862